The CDC now recommends that people whose immune systems are compromised moderately to severely should receive an additional dose of mRNA Covid 19 vaccine. CDC does not recommend additional doses or booster shots for any other population at this time. Additional information can be found on the CDC website at this link. https://www.cdc.gov/coronavirus/2019-ncov/vaccines/recommendations/immuno.html
Nassau County is having a vaccine event every Thursday in Yulee from 4pm to 8pm. These are by appointment only events and appointments can be booked here . Details of other place to get the vaccine are also on this page.